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Veichi ACH200 Series Manual page 23

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Chapter 3 Mechanical and Electrical Installation
frequency is lower than 40Hz, the heat generation can be estimated at 2% of the rated power of the
AC drive. The air conditioning capacity required for individual space cooling is calculated in
accordance with the practical area of the room, and can generally be calculated at 0.15kW per square
meter (this can be ignored if the ambient temperature is below 40° C).
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b) Selection of air conditioners
● Selection by number of hp
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● Selection by model
It is customary to use 1 hp equal to 2500 W of cooling capacity (i.e. 25 models) and 1.5 hp
approximately equal to 3500 cooling capacity (i.e. 35 models). The rest of the models can be
estimated according to the cooling capacity, e.g. two hp for a 50 model.
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● Selection by power consumption of the air conditioner
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c) Advantages of retrofitting air conditioning
As there is no direct indoor/outdoor air circulation, this method makes it extremely easy to
keep the indoor environment clean, growing the life of the AC drive and reducing maintenance rates.
2) Retrofitting of air ducts
a) Design of the air ducts
The conventional design is to install air ducts on top of the cabinet to discharge the heat
generated by the AC drive directly to the outside, where the system is cooled by the constant
replenishment of cold air from the air inlet of the AC drive room.
ACH200 Series High Voltage Variable Frequency Speed Control System Operating Manual
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